OCTOBER 17, 2014Homework: Review your notes pgs. 20-24-Compare with

the lesson Slides on my website (Daily Lesson Slides 10/13- 10/17).

Do Now: Write down H.W---Update T.O.C.--- pg. 24: Valence Electrons-

Dot Diagrams -Take out Valence Electrons worksheets from

yesterday…,colored periodic tables, family summaries.

Skip Transition Metals 3-12

WHY DO ELEMENTS REACT??

Did each family on the periodic table react with other elements?

Why?? They want a full/stable Shell!! Give or take

Valence electrons are shared or taken during chemical reactions- creating bonds.

Elements in the same group/family react similarly.

ELECTRON DOT DIAGRAMS

Model the amount of valence electrons that exist for an element.

Turn to pg. 57 in your textbook. And look at Figure 6- What do those Dots represent?What is the trend in valence electrons

from the elements lithium to neon?

PERIODIC TABLE TRENDS- VALENCE ELECTRONS

Trends: The number of valence electrons (dots) increases

from left to right This shows that each element is in a different group

(the number of dots represents the group number)-Remember we skip transition metals 3-12 and drop the one from group numbers 13-18 (only when talking about the number of valence electrons

Each of the elements listed is in period 2 of the periodic table

Now draw Period 3 elements underneath period 2- What trends do you notice now?

Groups/ Family Names

Alk

ali

Meta

l Fa

mily

G 1

Alk

alin

e E

art

h M

eta

lsG2

Transition Metal Family

B

oro

n F

am

ily

Carb

on F

am

ily

N

itro

gen

Fam

ily

Oxyg

en

fam

ily

Halo

gen

Fam

ily

Noble

Gas

Fam

ily